Signaling system for party-lines.



R. F. SPAMER.

SIGNALING SYSTEM FOR. PARTY LIF'IBF.

APPLICATION FILED SEPT. 15, 1910. i

' Patented Aug. 26, 1913.

W/lnesses: 7,6

1.0 i for use with party line selective systems and i if 115 mcmmnr.

STATES rnrrnn r OFFICE.

a m, pr new YORK, "N. Y.,

To all whom-it may c ncern;

Be it knownthat' f, Brom ne F. SPAMER, citizen of thefUnite d States residing at New York, in -.the county of Westchester and State of New York, have invented a certain new ahd useful Improvement in Signaling .Systenis for Party-Lines, of which the-following is in full (219M, cfoncise d ,exact descr ption.

My invention relates to signaling systems more particularly to: a system wherein' 21 plurality of p uirty telephone lines extending from asingl'e station are arranged to receive s gnaling current from a single source or signalingepparqrtus.

In the class of party line systems known as train-despatcl'ring systems, to which this invention particularly applicable each line is'provi ed with a plurality of selecting devices one at each station, arranged to act "rin response to impulses from a central or sendingstation operate a'signal or other, device at thecorrespo'nding station, each station on a; line requiring a different munbei' .or character of impulses from thesend-f ingjstatjion -to"operate or permit the operation of tlieSig'nal. The impulses maybe sent over the-:line by apparatus compris ng an impulse, relay which acts in response to 'a toothed impulse wheel 'to..-open, and close a battery circuit onto the line. -There may he an individual sender for each station-pncach line, ora sender for each line provided withz means for reg'ulating at will the numher of impnlsessent out for signaling pun poses.

'- parzitus at the sending station is so arranged that when a sending'key is operated the lint with which'that key is associated 'will;be

automatically connected with the contacts? of the impulse-transmitting relay, and will 1 disconnectedtherefrom when the call-is completed; This is preferably accomplished '1 by providing-for each line a line relay the 4 connect the line'withthe impulse circuit.-

and the line relay are operated automatilsrmnn, or new YORK, n. Y-., AS

In accordance with my invention the P"-" sienon TO wrisrnnn 'ntne'inrc com- Aconrorm'non or-ztntmersgi ,7

' s'IeNALrne SYS'tEM FORPABIY-LINES:

. j :swciflcatioh'ot-Letteis Pat ents l zttl l t ed Au gjzfll9l3. Appiication'fil ed"September 15,3910. S eri a1No2'582,247. 1

'cally' with the operation ofthe sending key, thus accomplishing all switching"operations automatically.- Anotlier advantage is that the sending apparatus is cut off from the line (hiring-the use of "the telephones thus 'ratus which would he detrimental to the transmission o'f volce currents.,,

8 may. he electrically cgnneeted' "ori strapped together; -ene ,-.g 9u and the. l'evers 9 in one gIOi IP tlIG tW Q griiups being; connected in opposite sides of the signaling circuit. ,lfor cacli line there is shownal set of sending keys 12,-;each key zcoinprising'ja toothed :impulse wheel 13 and ac'ontact spring 14 iulapted to be engagediby tliteeth of a coseglucntal plate'.15, isshcwnon cich of the wheels for. regulatingthe'nninher of teeth which will, I-pass under the 1 contact spring for sigmilingpnn iosc .lhecontulct springs tcirothenand all are connected to one pole eta battry ,-I l w The impulse wheels of reach setjofsending' keys are also any connected to one terlni'nal d fgthe winding of itsco 'respondmg line relay l for applyingsignaling?current' to .the line, this is shown a cmhrhcing iiircIay-QO'adapted when energized to 'closcwzipitacts' 21, 21 which a e coiinetedfxyith' opptisijte poles of .n battery-22. i \i-mati1' s23 M11324 of said strappedhontact levers 8 'antSQof'the line relays 7, the connection being through the The accompanying drawing 15 'a diagram will hcreiimfterfhppear. Thep iitact leversoperating mpulse Wheel. 'An' adjustable .i'or each. set]- of -sending;qlreys are strapped windings of retardation coils 2 5f and 265 the eliminating from the 'talking'circuit appastrapped together, but-each 'set'is individu- Referring now to,the.apparatuszeinployed I 1'- 'i'-eh1ya re cpunected respectively with the One of the advantages resultingwfromF this arrangement is that the impulse relay f -object 'of the retardation coils being to smooth down the currentlimpulses so that disturbing noises will not be caused in the telephones in case-conversation is being carried on ovcrfjthe line. A condenser 27' bridgedacross the lines between said retardation' coils assists in smoothing the impulses and. absorbing inductive discharges.

i A shunt path comprising a condenser 28. and anon-inductive resistance 29 1s bridged around each contact lever and contact of the impulse relay, in order toprevent excessive I sparking at the contacts when the circuit is opened and closed. Each of'the lines 3, 4.

of concomplete acircuit throng the line relay 7 associated cwithithe line '3 and the impulse relay 20. -"-.This circuit maybe'tracecl from one side of battery 18 through conductor 35, conductor 36, the contact spring 14, impulse a0 wheel 13,, conductor 37, winding of the line i r rela TI'aSsociated with line 3,- conductor 38,

- con uctor 39,"'fwinding of impulse relay 2O and'conductor to the other side of the batter 18. Current from the battery-18 3'5 over t e-cir'cuit traced will energize the line relay 7 and the impulse relay 20 causing the operation of the contact levers of both rd lays. .The operation of these contact levers will complete a path for current which may- 40 be traced from one side of battery 22,

' through conductor 45, one of the contacts 21 of the impulse relay 20, windings of the retardation coils 25 and 26-, conductor 46, condoctor 47, contact 48 of the line relay, over {5 one conductor of the line 3 through the way- -statioixs 6, 6 on said line and back over the other conductor of said line 3, through confact 49 of the line relay, conductor 50, conuctor 51, the other windin s of the retardalio on-coils 25, and 26, the other contact 21 of the impulse relay 20 and conductor 52 to the,

other side ofbattery 22. Each line relay .7 is provided with a copper shell 55 around its 7 core togmake it slow-acting as compared 55 with the impulse relay 20 so thatit 'will not fallback during-the intervals between the,

successive current-impulses caused by the impulse ivheel making and breaking the cir curt through the line and impulse relay first Ideseribed. The impulse wheel 13-will -causeimpulses to, be -sent over the.line until the segmental plate 15 thereon comes into,;e n-

' gageinent with the contact spring, where upon the circuit will be continuously closed 85 through th'e winding of the impulse-relay 20.

that it is desired to calla party on line 3' station will-start one of the impulse wheels- ,operation windi e sa flqin ul relay otsuchfline.

and currentfrom the battery 22 thus maintained upon the line during the time' that the segmental plate is passing under v the con-- tact spring 145. This current may operate a signal at the called station in'a well known way. Whenthe segmental plate and all of the teeth of the impulse wheel have passed under the contact sprin 14: the circuit through the impulse and line relays will be ,opened and that particular line will be disconnected from the signaling ciicuitleaving" the signaling apparatus free for use on anotherline. f

It will be noted that the line 31 leading to the despatchers telephoneis connected to the train lines'outside the-contacts of the line relays, so that during the time conversation is goin on between ,the des ateheti and a waystation on any line, that line will be disconnected from the current impulse apparatus, thus. removing the retardation coils from the talking circuit. Y v .The condensers 30 are interposed between the lines leading to the train desp'atcherstelephone and 'the train. lines to prevent t e 9' impulses which aresent outto signa'l aparty on one line from afl'ecting the selectors of the other lines extending fromthe -same station. J

I claimze p 1. The combination with a plurality of .lines extending from one station, of current impulse apparatus at said station for signalmg over said linesio crating; mechanism 1 for said current im u se apparatus indi- 1'0 vidual to each of sai lines,-and means 09: eratingautomatically with the operation ofsaid mechanism to associate said impulse apparatuswith its correspondi'n line.

2. The combination with a p urality of -10 lines each having selective devices connected thereto, of an impulse relay, s. line relay for each line adapted to extend'the circuit of said line to the contacts of said impulse relay, a. sending key for eachline, a circuit for said impulse relay arranged to be controlled by any of said sending keys and means -brought into action in the operation of the se'ndm key of any'line for operating the line re ay of-such line;

3. The combination with aplurality of lines each havin a selective device con- I nected thereto, 0 an impulsenrelay, a line relay for each lineadapted to extend the circuit offsaid line to the-contacts of said impulse relay, circuits; common to saidsimpu se relayandmach oi sa d line relays, and

e t ey t sash-line d p d in ,osmthe c rcuit throu h the se relay andt e line 12:

' 4. Theamb n ion w th, on. P who of lines extending from, one s'f zajtioii, of (signal ing apparatus atQsa-id station, foiii'signaling on any one of said linetg, devices 1 individual to each of said lines, said switchin}; devices operating to associate. said signaling apparatus with its line for purposes of signaling'and to disconnect it therefrom when the-signaling is completed and circuit closing devices at said station controlling jointly the operation of said signal apparatus and said switching .device:

5. T h combination with telephone lines each havingvwaystations connected therewith, each=waystation includin telephone apparatus and a selective .signa ing device, 0 means for operating said signaling de-- vices embracing an impulse relay, retardation, coils in circuit with the contacts of said .relay and a condenser in bridge of the circuit containing said retardation coils.

6. The combination with telephone lines each having selective signaling devices convnc cted therewith and a telephone set connected with all of said lines, of an impulse relay-for operating said signaling devices,

retardation coils in circuit with the con:

poses of signaling and to disconnect it therefrom when the signaling is completed. In witness whereof, I, hereuntosubscribe my name this 14th day of Sept. A. D., 19l0.

RICHARD; F; SPAMER."

Witnesses: I

IRVING =MAcDoNALn, T, Q. BoozER. 

